09-13-2010, 10:38 PM
Secret Id is programmed the moment you start the game, you can't figure it out unless you catch a shiny Pokemon beforehand and check it's iv's. As in, each time you start over a new game, you're issued a new secret id. Everyone has a different secret id, so you won't get the exact same chances of getting a shiny.
http://www.smogon.com/forums/showthread.php?t=52180
You'd be better off reading about it here then having me explain it to you d:
http://www.smogon.com/forums/showthread.php?t=52180
You'd be better off reading about it here then having me explain it to you d: